TY  - RPRT
TI  - [Vacuum extractor. Problems posed by its use].
AU  - J López Cabal
AU  - R Tapia Nava
AU  - F Ramírez Alonso
PY  - 1969
UR  - https://pubmed.ncbi.nlm.nih.gov/5406628/
ID  - 5406628
ER  -